Phenomenological Constraints on $\barΛ$ and $λ_1$

Details Phenomenological Constraints on $\barΛ$ and $λ_1$ Phenomenological Constraints on $\barΛ$ and $λ_1$

1994-01-13

arxiv.org/abs/hep-ph/9401246v1

Phys.Rev.D49:4331-4334,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

8pages RevTeX + 1 postscript figure included, WIS-94/2/Jan-PH

Scientific paper

10.1103/PhysRevD.49.R4331

Combining the experimental data on the inclusive decays $D\to X\,e\,\nu$, $B\to X\,e\,\nu$ and $B\to X\,\tau\,\nu$, we find severe constraints on the $\bar\Lambda$ and $\lambda_1$ parameters of the Heavy Quark Effective Theory. In particular, we get $\bar\Lambda<0.7\,$GeV. Our constraints further imply $m_c\geq1.43\,$GeV and $m_b\geq4.66\,$GeV. We discuss future prospects of improving these bounds and their phenomenological implications.

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